- (transitive)
to form an arch over
WordReference Random House Unabridged Dictionary of American English © 2025
o•ver•arch
(ō′vər ärch′),USA pronunciation v.t.
v.i.
- to span with or like an arch:A new bridge overarches the river.
v.i.
- to form an arch over something:a cerulean sky overarching in the early twilight.
- over- + arch1 1660–70
Collins Concise English Dictionary © HarperCollins Publishers::
'overarch' also found in these entries (note: many are not synonyms or translations):